it would be a lot easier to install gutters and threshold seals to keep the rain runoff away. Trimming a couple of inches off the bottom of the garage door might fix the window alignment.
I don't see any easy way to trim that lip back. It looks pretty rough/jagged too - maybe some kind of angled rubber ramp would help there?
I don't see any easy way to trim that lip back. It looks pretty rough/jagged too - maybe some kind of angled rubber ramp would help there?
